what is cos2x
in terms of tan
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Answer:
Step-by-step explanation:
Cos2x=Cos^2 x-Sin^2x
=Cos^2x(1-tan^2x)
=(1-tan^2x)/sec^2x
=(1-tan^2x)/(1+tan^2x)
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Answer:
sorry
Step-by-step explanation:
what do u mean to say
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